Question

if F(t) = (t^2sint) + 3tcost find f'(π/2)
do I plug in π/2 into each t in deriv?

Answer 1

you plug π/2 in after finding f'.

Answer 2

so then I would be plugging in π/2 to each t value? even the values without sin or cos (ex. (π/2)^2 * cos (π/2)?

Answer 3

yup, essentially, t= π/2 everywhere in the f'

Answer 4

thank you so much!

Answer 5

You're welcome! lol